FentonLegareBergeronEtAl2006

Référence

Fenton, N.J., Legare, S., Bergeron, Y., Pare, D. (2006) Soil oxygen within boreal forests across an age gradient. Canadian Journal of Soil Science, 86(1):1-9.

Résumé

Globally, soil anoxia and water table rise play a role in the developmentof peatlands from forests. Cited causes have included a diversityof internal and external mechanisms, including Sphagnum and feathermosses, hardpan development, and peatland expansion. The objectivesof this study were to examine water table depth in black sprucestands of the Clay Belt of Quebec and Ontario, and to associatechanges with potential stand scale causal factors (primarily biological).A methodological issue, the link between oxygen zone and water table,was also addressed. Within stands less than 100 yr post-fire, oxygenzone and water table position were only loosely related, and noother potential factors were significantly correlated. Across achronosequence of stands, while oxygen zone thickness in the soilprofile was relatively constant, its position relative to the mineralsoil changed, as it rose from the mineral soil into the forest floor.Forest floor thickness was the dominant explanatory factor in oxygenzone position, suggesting that in these forests other postulatedmechanisms are less important. At the landscape level, the movementof the oxygen zone into the forest floor has important consequencesfor the long-term productivity of this intensively exploited forestregion.

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@ARTICLE { FentonLegareBergeronEtAl2006,
    AUTHOR = { Fenton, N.J. and Legare, S. and Bergeron, Y. and Pare, D. },
    TITLE = { Soil oxygen within boreal forests across an age gradient },
    JOURNAL = { Canadian Journal of Soil Science },
    YEAR = { 2006 },
    VOLUME = { 86 },
    PAGES = { 1-9 },
    NUMBER = { 1 },
    ABSTRACT = { Globally, soil anoxia and water table rise play a role in the developmentof peatlands from forests. Cited causes have included a diversityof internal and external mechanisms, including Sphagnum and feathermosses, hardpan development, and peatland expansion. The objectivesof this study were to examine water table depth in black sprucestands of the Clay Belt of Quebec and Ontario, and to associatechanges with potential stand scale causal factors (primarily biological).A methodological issue, the link between oxygen zone and water table,was also addressed. Within stands less than 100 yr post-fire, oxygenzone and water table position were only loosely related, and noother potential factors were significantly correlated. Across achronosequence of stands, while oxygen zone thickness in the soilprofile was relatively constant, its position relative to the mineralsoil changed, as it rose from the mineral soil into the forest floor.Forest floor thickness was the dominant explanatory factor in oxygenzone position, suggesting that in these forests other postulatedmechanisms are less important. At the landscape level, the movementof the oxygen zone into the forest floor has important consequencesfor the long-term productivity of this intensively exploited forestregion. },
    KEYWORDS = { Black spruce Clay belt Forest floor Paludification Sphagnum Watertable },
    OWNER = { brugerolles },
    TIMESTAMP = { 2007.12.04 },
}

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